Theora to IVF - Online Video Converter

Convert Theora to IVF online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.

Convert Theora to IVF

[+] Drop Theora video here or click to select Theora, OGV

Output format

IVF (VP9)

No transcoding (remux only)[i]

Mode[i]

Simple Advanced

Quality[i]

Resolution[i]

About Theora to IVF

Convert Theora to IVF. Theora is Xiph's open video codec paired with Vorbis audio. IVF is the minimal container for VP8/VP9/AV1 research streams. Audio is not supported, so only the picture carries over..

Why convert Theora to IVF?

Smaller files with IVF lossy compression.
Keep animation and transparency where supported.
Private, no upload - runs in your browser.

Theora vs IVF

Animation	Yes	Yes
Transparency	No	No
Compression	lossy	lossy
Typical use	Theora is Xiph's open video codec paired with Vorbis audio.	IVF is the minimal container for VP8/VP9/AV1 research streams.

When not to convert Theora to IVF

Skip IVF for archival masters: lossy compression discards detail, so keep the Theora original.
Keep a master copy: repeated exports stack small losses, so archive Theora before batch IVF shares.

Limits

Starting point: Theora - Theora is Xiph's open video codec paired with Vorbis audio. Ogg multiplexing quirks can offset sync; verify after conversion. Audio is not supported, so only the picture carries over. Encode IVF (VP9) from Theora at a bitrate near the source, and confirm the audio track before converting.

How conversion works

Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.

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FAQ

How do I convert Theora to IVF?

Drop your Theora file onto this page, choose quality and codec settings, then click Convert. The result downloads as IVF instantly. All processing runs in your browser.

What codec is used for IVF?

The default codec for IVF is VP9. You can change the video and audio codec in Advanced mode.

How do you store my files?

We do not store any processed videos. All conversion happens entirely in your browser using FFmpeg WASM.